/*
 * (C) Copyright 2006-2010 Nuxeo SAS (http://nuxeo.com/) and contributors.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser General Public License
 * (LGPL) version 2.1 which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl.html
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * Contributors:
 *     bstefanescu
 */
package org.nuxeo.gwt.habyt.app.client.form.validators;


/**
 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
 * 
 */
public abstract class Validators {

    public static Validator newValidator(String expr) {
        if (expr.startsWith("@")) {
            int i = expr.indexOf(':');
            String value = null;
            String type = null;
            if (i > -1) {
                type = expr.substring(1, i);
                value = expr.substring(i + 1);
            } else {
                type = expr.substring(1);
            }
            return newBuiltinValidator(type, value);
        } else {
            return new JsValidator(expr);
        }
    }

    public static Validator newBuiltinValidator(String type, String value) {
        if ("required".equals(type)) {
            return new RequiredValidator();
        } else if ("regex".equals(type)) {
            return new RegexValidator(value);
        } else if ("sameAs".equals(type)) {
            return new SameAsValidator(value);
        }
        return null;
    }

}
